Superheater-boiler.



J E. BELL y SUPERHEATER BOILER. l urmonlou rILnn un a1, 190e. nmmwsn un.27, 1901. 1,045,248

1 www ,n 6 i wm Nm dS e2 b m a P J'. E. BELL. SUPBRHEATBB BOILBR.

APPLICATION FILED HAY 31; 1906'. BENEWBD HAB. 2'?, 1907.

2 SHEETS-SHEET 2.

wn'nEssEs, A mvENTon UNITED STATES Parnnr ormoni.

OF YORK, N. Y., A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed May 31, 1906, Serial No. 319,459. Renewed March 27,1907. Serial No. 364,866.

.To all whom it may concern:

Be it known that I, JOHN E. BELL, of New York, in the county and Stateof New York, have'invented a new and useful Improvement inSuperheater-Boilers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification, in which- Figure 1 is asectional sideelevation of a uperheater boiler constructedin accordance with myinvention; and Fig. 2 is a similar view, showing diagrammatically amodified arrangement of the-superheater.

My invention relates to the class of superheater boilers, particularlythose wherein thefurnace is. in front of vertically-extending watertubesand.' is provided with an 'arch orl dome.

The objectjof the invention is to provide 'for attaining a high degreeof superheat Awhile suitably protecting the superheater.

' -It is :also designed to provide a super- Y' heater which is locatedso as to be readily .25'. I

accessible for inspectiongand repair:

Referring to Fig-1 the drawings, .2, 3 and 7represent upper transversesteam and Water drums connected vertically .inclined tubes 5, 6 and 7 tothe lower transverse mud *drum 8. 9'is a furnaceethe 'gases being d1-ff'rected anion the tubes of the front bank by -thenbaille'-10,prefeiably';having a shelf 11,

and'thence descending, among 4the second bank-of tubes, in whiclrtheyare retained by* V the baliielQ. The gases then risejthrough the lastbank of ytubes and pass to the outlet port 13. shown as consist-ing ofboxes 14, 15 embedded; inthe front 'wall 'and connected by a 4G locatedabove the furnace arch 17 and comtransverse series of 'superheater tubes16, is

,f bais 1.8 may be provided in any desirable `number, these barsventending among the tlilies.. of the front" bank above the superhmterand causing the rising gases to delQuottoward the front wall so as tomore @aan promptly regulate the amount of superheatimparted to thesteam. In this form 19 "repres'entsjpalV` supply-pipe for steam whichleads from-the middle upper drum, whileQO is the 4super-heater outletpipe. I have shown The superheater which I have the front upper drums asconnected bv water tubes 21, and the front and rear water drums asconnected to the middle upper drum by steam tubes E22 and Q3.

In Fig. Q I show a form similar toV that of Fig. 1, except that thesuperhcater boxes 14a and 15a are embedded in the side wall of thebcilersetting, the superheater tubes 16a extending transversely acrossthe boiler setting. In this case parts similar to those of Fig. 1 aremarked with similar numerals with the letter a applied.

The advantages of my invention result' from the high degree ofsuperheat. obtained, while the arch protects the superheater fromburning out and baiiies the gases into the front bank of water tubes.The amount of superheat may'be regulated by regulating the battlingwhich directs the gases into the superheater. l The superheater in thisposition Will-"also receive considerable heat by radiation.y Thislocation of the superheater permits easy. inspection and repair, and isdesirable for this reason.

Instead of extending one set of tubes across the width of the boiler, Imay employ boxes in both side walls with two sets of U -shaped tubesextending to the central front part of the boiler; multiple mud drumsmay used, the'tubes may be exactly vertical or inclined, and many otherchanges may be made without departing from my invention.

I claim:

t A`water. tubel boiler having a heated space defined by a wall of thesetting, the arch over the combustion chamber and a set ofwater tubes,and a superheater located in saidv spa-ce and disposed in substantialpar- JOHN E. BELL, OF NEW YORK, N. Y., ASSIGNOR TIO THE BABCOCK 8:WILCOX COMPANY, y

allelism with the furnace top; substantially substantial lparallelismwith the top of the A furnace, and a baiiie to direct the products of#`combustion from the furnacef upwardly among the water tubesand thesuperheater tubes; substantially ass-described;

vspace defined by the wall of :the setting` the 11o top of thecombustion chamber andaset of Water tubes, a superheater havinhorizontal.

upwardly among the water tubes and to the A superheater, and baffleshelves among the tubes disposed to.v control the amount of products ofcombustion directed to the superheater.

4. A Waterltube boiler 4having steam and water drums connected by banksof tubes'to a transverse mud drum or' drums, a furnace at the lower endof the front bank, an arch and out of the direct path of the oversaidfurnace, a. plurality of headers in4 the wsu ofthe boiler settingimmediately 15 abovel the arch, anda plurality of horizontal U-shapedsuperheater tubes extending from the headers over the top'of the furnacearch,

ses from the furnace; substantially asdescrlbed.

In testimony whereof, I have hereuntoset my hand. 1

JOHN E. BELL.I Witnesses:

CHARLES B. KNUDsoN, GEORGE H. SONNEBORN.

